Method of protecting documents - William, Jones John

Title:

Method of protecting documents

United States Patent 1374208

Inventors:

William, Jones John

Publication Date:

04/12/1921

Export Citation:

Assignee:

William, Jones John

Primary Class:

427/1

Other Classes:

118/31.5, 264/30, 283/69, 283/78, 430/10

International Classes:

B42D15/00; G03C5/04; G03C7/00; B42D15/00; G03C5/04; G03C7/00

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